On September 17, the aircraft of the anti-Daesh coalition carried out four airstrikes against the positions of the Syrian army at the Deir ez-Zor airport, leaving 62 soldiers killed and some 100 wounded. The Pentagon said that the airstrike was a mistake and was intended to target Daesh militants, while a number of Syrian officials stated that the attack was intentional.
The Syrian civil war has been raging for over five years, with all diplomatic efforts by Russia, the United States and other mediators so far failing to completely stop violence. Deir ez-Zor, which is still held by Syrian government forces, has been under siege of the Daesh since July 2014. Daesh, a terrorist organization outlawed in many countries, including the United States and Russia, took over large swathes of Syria and Iraq the same year.
